Device for preventing singles



Sept. 141926. 1,599,837

C. A. PIERCE DEVICE FOR PREVENTING SINGLES Filed Feb. 28, 1925 s ll In [24 LEW? as a Fig.2. F1 13, m Egg S I I lnvenTo Clarence A. Pierce ATTy s.

Patented Sept. 14, 1926.

CLARENCE A. PIERCE, 0F LUV/ELL, MASSACHUSETTS.

DEVICE FOR PREVENTING SINGLES.

Application filed February 28, 1925. Serial No. 12,226.

This invention relates to a device for preventing singles which Is applicable for use in connection with fly frames, spinning frames, twisters and similar machines.

The object of the invention is to provide an improved device for this purpose which is simple and inexpensive to manufacture and which will operate in a novel Way to break the remaining one of two ends which are being doubled as soon as the other end becomes broken thereby stopping the operation of the machine.

The device comprises an end-breaking member which is situated between the two ends which are being doubled and which under normal conditions is retained in its neutral or normal position by the friction of both ends on said member.

Said member is provided with an endbreaking portion or edge which when the member is in its normal position is situated between but out of contact with the two ends. If, however, either one of the two ends break the member becomes unbalanced because the intact end only will apply friction thereto and as a result said member will be turned by the friction of the intact end and in its turning movement the end-breaking edge or portion will engage said intact end and break or sever it, thus preventing the formation of a single.

In order to give an understanding of the invention I have illustrated in the drawings a selected embodiment thereof which will new be described after which the novel features will be pointed out in the appended claims.

Fig. 1 is a sectional view of a portion of spinning frame or fly frame having my improvements applied thereto;

Fig. 2 is a top plan view of the end-breaking member showing it in neutral position;

Fig. 3 is a similar View showing how the device operates when an end breaks;

Fig. l is a front view of Fig. 2;

Fig. 5 is a sectional view on the line .55, Fig. 2;

Fig. 6 is a side viewof a device showing a different embodiment of the invention from that illustrated in Figs. 1 to 5;

Figs. 7 and 8 are plan views of Fig. 6 illustrating the manner in which the device operates.

In Fig. 1, 1 indicates a portion of a spinning frame or fly frame and 2 indicates generally the drawing rolls which are supported on a stand 3 as usual.

1 represents the usual reciprocating traverse bar which gives the yarn ends a traversing movement as they are delivered to the drawing rolls. The two ends which are doubled together are indicated at 5 and 6 and these ends may be in the nature of roving or yarn depending upon the particular n'iachinewith which the device is used.

3 These parts are or may be all as usual in textile machinery of this class and form no part of my present invention which comprises a yarn-breaking member situated be tween the two ends 5 and 6 and mounted to.

turn freely about its axis, said member having such a shape that it will be held in a balanced or neutral position by the friction of the ends on opposite sides thereof, said member further being so constructed that if either end breaks the turning movement which is given to said member by the movement of the intact end will cause said intact end to become broken thereby preventing the formation of a single. This end-breaking member is illustrated at '7 in Figs. 1 to 5 and it is pivotally mounted upon a support 8 which is secured to the traverse bar 4.

This support 8 is formed with the guide portion 9 having the slot 10 through which the ends 5 and 6 pass and it is also provided with the depending leg 11 by which it is secured to the traverse bar a. This holder 8 is also provided with a second guiding member 12 having a guide eye 13 through which the ends 5 and 6 pass.

The member 7 is supported on the holder 8 between the guides 12 and 9, it being pivotally mounted upon a pivot pin 14 which rises from the holder 8 and which enters a recess or bore formed in the member 7. This member 7 has a transverse dimension consid erably greater than thewidth of the slot 10 and when the machine is threaded up the two ends 5 and 6 are situated on opposite sides of the member 7 and in passing from the guide 12 to the guide 9 each end is deflected or bent outwardly by the member 7 as clearly seen in Fig. 2. The member 7 i formed with an end-breaking edge portion 16 which, when the member turns about its pivot pin 14 into the position shown in 3, Will engage the inner face of the guide 9 adjacent the slot 10.,

In the construction shown in Figs. 1 to 4 ners 17. Under normal conditions the device is in the position shown in Fig. 2, and

as the ends are drawn forward by the drawing rolls they each apply friction to said member 7 and so long as both ends are intact the friction on oppos te sides of the member 7 will be substantially the same and said member will beheld balanced in the position shown in Fig. 2. If, however, either end breaks, as indicated by the broken end 6 in dotted lines F 2 then, of course, the broken end ceases to apply friction to the member 6 while the intact end continues to apply friction. As a result the friction of the intact end 5 on the corner 17 will give the member a turning movement in an anticlockwise direction, as shown by dotted lines Fig. 2 and as the member 7 turns to a point where the corner 17 is carried out of engagement with the end 5 the edge 16 will come into engagement with said end so that the continued feeding movement of the end 5 due to the operation of the drawing rolls will continue the turning movement of the membe1-7 around into the full line position Fig. 3 in which position said corner 16 has been brought into engagement with the inner face of the guide 9. By this turning movement the end 5 is pinched or gripped between the end-breaking edge 16 andthe guide 9 and further feeding movement of the end is, therefore, prevented.

The continued operation of the drawing rolls 2 will, therefore, break the end 5. As soon as both ends 5' and 6 are broken the machine is stopped by the usual stop motion.

Where the device is used on a fly frame or in connection with roving'it is sometimes desirable to apply a slight tension to the ends and I have provided herein for this by employing a tension weight in the form of a roll 18 which rests on the ends adjacent the lead-in eye 13. In Figs. 1 to 5 said eye 13 is formed in one arm 12 of: a U-shaped member 19 which is secured to the support 8 by means of a screw 20. The other arm 21 of this member 19 is formed with a slot 22 through which the ends 5 and 6 pass.

The tension weight 18 is shown as received between the arms 12 and 21 and it is provided with flanges or heads 42 at it's ends which by their engagement with the arms 12 and 21 hold the weight from lateral movement and retain it in position. The weight of the tension member 18 will preferably be such that whenboth ends are intact the tension thereon willhold the weight in its elevated position shown in-Fig. 5. When, however, one end breaks so that the weight is entirely supported by-the other end, said weight will deflect said other end downwardly between the arms 12 and 21 as shown by dotted lines in Fig. 5 thus applying an increased tension to said end which will assist in caus ng the member 7 to operate as above described.

The member 7 is preferably provided with a pointed upper end 23 to assist in threading up the device, this shape making it easy to place the two ends on opposite sides of the member when the device is threaded up.

Tn F 6 and 7 I have illustrated another embodiment of the invention in which each side face of the member 7 is formed with two angles or corners 24 and 25. advantage of this construction is that as the member 7 begins to turn the apex 2 1 acts against'the end thus deflecting it further outwardly and increasing the friction so that The the turning of the member is rendered more positive.

The device shown 1n Figs. 6 and 7 is especially useful in sp nning frames or 111 machines that are handling ends which are more ber turns, whereby when either end breaks l the friction of the intact end will turn the end-breaking member into position to grip the intact end between it and the guide.

2. In a device of the class described, the

combination with a guide through which the ends being doubled pass, of an end-breaking member situated between said ends and turnable about an axis at right angles to the direction in which the. ends are fed, whereby said end-breaking member will be retained in neutral position by the friction of both ends thereagainst but if either end breaks said member will be turned by the frictional engagement of the other end therewith, said member being constructed to. break said other end as it turns.

3. In a device of the class described, the combination with a guide through which the ends. being doubled pass, of an end breaking member situated between said ends and turn-able about an axis at right angles to the direction in which the ends are fed, whereby said end-breaking member will be retained in neutral position by the friction of both ends theieagainst but if either end breaks said member will be turned by the frictional engagement of the other end therewith, said member having a gripping edge by which the other end is gripped against the guide when said member is thus turned.

4. In a device of the class described, the combination with a guide member having a guiding slot through which the ends to be doubled pass, of an end-breaking member situated between said ends, means for sup porting said member for turning movement about an axis substantially at right angles to the direction in which the ends are fed, said member having on each side an angular portion with which the ends engage, whereby the member is held in neutral position by the friction of the ends thereagainst so long as both ends are intact, but is turned by the friction of one end when the other end breaks, and means to break the intact end by the turning movement of the member.

5. In a device of the class described, the combination with a guide member having a slot through which the ends to be doubled pass, of an end-breaking member situated between the ends, means for pivotally mounting said end-breaking member, the latter having a yarn-breaking edge which is normally held out of contact with the ends by the frictional engagement of both ends against said member, said member being turned by the frictional engagement of one tween said ends and normally held in neutral position by the frictional engagement of both ends therewith, said member having a portion adapted to engage the guide when the member is turned, whereby when either end breaks the friction of the intact end will turn the end-breaking member into position to grip said intact end between itself and the guide so that said intact end will be broken by the drawing rolls.

7. In a device for preventing singles, the combination with drawing rolls, of a guide through which the ends to be doubled pass, and a single end-breaking member situated between the ends and which is held in in operative position thereby, said member becoming operative when either end breaks to break the other end.

In testimony whereof, I have signed my name to this specification.

CLARENCE A. PIERCE. 

